How To Hang Thermal Liner


Wallrock Thermal Liner

Since 2009






Product Overview
Wallrock Thermal Liner starts saving you energy from the moment your heating is turned on. Most of us have experienced how long it can take for a room to warm up, as cold walls soak up much of the initial heat. Wallrock Thermal Liner slows down this process, retaining more heat in the room and allowing it to warm up much faster, in some cases more than halving the ‘warm up’ time, creating a comfortable room environment with significantly less energy. It has been approved by the Energy Saving Trust because of its thermal efficiency and energy saving properties.

It is the perfect solution for restoration projects or buildings with period features such as exposed beams where more rigid insulation materials cannot be used.

This product is suitable as a localised ‘problem solver’ for cold external walls and is not recommended for use in fire escape routes inside your home unless the surface is further treated with a fire retardant covering.

Wallrock Thermal Liner is part of the Thermally Efficient Wallpaper range. Please click on the PDF file below to find out more.


    • With Thermal Liner you can Paste the Wall or the Paper
    • Amazing Strength
    • Thermal Liner Smooths out Imperfections
    • Excellent Surface for Paint
    • Combats Damp and Mould Formation
    • Reinforces Walls and Ceilings
    • Tough and Durable
    • Allows Walls to Breathe
    • Insulates
    • Thermal Liner Contains No PVC
    • Uses Paper from Well Managed Sources
    • Fire Rating : EN E


  • Roll Size (m): 0.75 x 10
  • Coverage (m²): 7.5
  • Carton Quantity: 1 Roll
  • Recommended Adhesive(s):
    We strongly recommend using our Wallrock Thermal Liner Adhesive for application of this durable heavy duty product.

  • Product Information Download:
  • BBA Certification (British Board of Agrement):
  • Wallrock Thermal Liner
  • Assessment of insulation products are reviewed in 3 ways;

    1. The efficiency measurement of an actual material is called the Lambda. The higher the Lambda rating the more efficient it is and as a result will require less energy or heat to feel warm an cosy. This rating is measures in Watts / Meter x Kelvin.
    2. Another aspect is the thermal resistance (R), a measurement of how well a material resists the transfer of heat. This takes into account the thickness and the material's ingredients. The higher the rating the more resilient the material is, retaining the heat rather than allowing it to waste away. The measurement units are meters squared x Kelvin/Watts.
    3. Thermal transmittance (U) is the exact opposite of thermal resistance. This measurement is how easily a material conducts heat, so the lower the number the smaller of amount of energy or heat will be lost. This is measure in Watts/mtr2 x Kelvin
    4. Reviewing The Thermal Liner Energy Savings

    With these 3 measurements the energy savings can be worked out once the room is up to a constant steady temperature. The advantage of using thermal liner is that its heat saving properties will allow a room to get to a steady working temperature as it retains more heat. So in real life the savings will be greater, precisely how much will depend on the outside temperature, wall thickness and construction plus how many times the heating is switched on and off.

    • A typical U value of a plastered solid brick wall is 2.1 Watts/mtr2 K
    • Therefore the R value is 1/2.1 = 0.476m2 K/W
    • The BBA certificate for Thermal liner states an R value of 0.0821 mtr2 K/W
    • The total R value for the wall with thermal liner is 0.476 + 0.0821 = 0.5581mtr2 K/W
    • This can be converted back to a U value; 1/ 0.5581 = l.79 W/mtr2K
    • As a result by applying Wallrock Thermal Liner to solid walls the U value is reduced from 2.1 to 1.79 W/mtr2 K
    In conclusion, by applying Wallrock Thermal Liner to a solid wall the standing heat loss can be reduced by 15%.
  • Condensation forms on walls when room air at a significantly different temperature comes into contact with them, in much the same way as condensation forms on a glass containing a cool drink.

    Condensation helps to create the perfect breeding ground for unhealthy mould spores to grow and flourish with the tell-tale black growth often forming in the coldest areas of the room such as corners and areas around windows or external doors. Mould spores can be especially hazardous to allergy sufferers.

    Thermally efficient wallpapers hold more of the heat energy from the room’s air at the wall surface helping to combat the conditions which promote condensation forming and mould growing.

  • Follow the instructions and apply the liner directly to a surface pre-coated with Thermal Liner Adhesive.

    Once dry, any gaps at seams can be filled with flexible filler and the surface painted.

    Alternatively, wallpaper can be applied directly to the surface. We strongly recommend a ‘Paste-The-Wall’ type of wallpaper.

    Please take a look at the video above for a full application example of Wallrock Thermal Liner.


  • Corringham Road, Gainsborough
    Lincolnshire, DN21 1QB

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